Re: How to repair the OSDs while WAL/DB device breaks down

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



> hi, everyone,
> I have a question about repairing the broken WAL/DB device.
>
> I have a cluster with 8 OSDs, and 4 WAL/DB devices(1 OSD per WAL/DB
> device), and hwo can I repair the OSDs quickly if
>
>   one WAL/DB device breaks down without rebuilding the them? Thanks.

I think this is one of the parameters one has to take into account
when doing the risk assessment of using one fast device for many slow
data devices when setting up OSDs. If/when the WAL/DB breaks, you
should be prepared to rebuild the OSDs related to the broken WAL/DB
device. From what I remember, the WAL+DB contains things that actually
are vital for the OSD, so it's probably not a matter of running some
magic command and recreate the information from the data device.

For old filestore journals, one could somewhat live with a broken
journaling device and recreate that, but I don't think that is true
for bluestore DBs.

-- 
May the most significant bit of your life be positive.
_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx



[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux